Viking Horns V1003ATK, 1.5 Gallon (5.6 Liter) All Metal Air Tank For Air Train And Air Suspension Systems Air Pressuire Storage: 180 PSI Max Tank Capacity: 1.5 Gallon (5.6 Liter) Includes: air gauge, pressure switch, hardware, fittings, hose Tank Dimesions:16-1/2" L, 7-1/2" H, 5-1/2" W 5 ports: four of 1/8" pipe thread. One of 1/4" pipe thread